IPA: /ˈɪli/
KK: /ˈɪli/
In a bad or harmful manner; not in a good way.
He performed illy on the test, resulting in a low score.
This word originates from Old English, meaning in a bad or harmful manner. The term 'illy' is an adverbial form that describes something done in a bad way or poorly.
Think of 'illy' as describing something done in a bad manner, helping you remember that it means poorly or harmfully.